Method for preparing 5-hydroxymethyl-2-furfural using acid catalyst in presence of ethylene glycol-based compound solvent derived from biomass
a technology of methyl-2 furfural and acid catalyst, which is applied in the direction of physical/chemical process catalyst, organic chemistry, chemistry apparatus and processes, etc., can solve the imbalance between market demand and supply, the chemical industry's dependence on petroleum, and the era of high oil prices. , to achieve the effect of reducing the dependence of petroleum, high yield and effective separation
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example 1
[0096]In a 38 mL thick-glass-walled pressure tubular reactor (having an O.D. of 25.5 mm and a length of 20.3 cm) equipped with a Teflon screw cap, a fructose syrup (150 mmol, 25% water) was placed, together with the solid acid catalyst Amberlyst-15 (300 mg), followed by adding the EG-based solvent monoethylene glycol dimethyl ether (3 mL). The resulting solution was heated at 120° C. for 2 hrs while stirring at 700 rpm. After completion of the reaction, the reaction mixture was cooled to room temperature and diluted 100-fold in distilled water. HPLC and 1H NMR analyses were conducted, and the data are depicted in FIGS. 1 and 2, respectively.
[0097]As can be seen in FIGS. 1 and 2, 1H NMR data identified the product as HMF while HPLC data indicated the production of HMF at a yield of 80%.
example 2
[0098]In a 38 mL thick-glass-walled pressure tubular reactor (having an O.D. of 25.5 mm and a length of 20.3 cm) equipped with a Teflon screw cap, a fructose syrup (150 mmol, 25% water) was placed, together with the solid acid catalyst Amberlyst-15 (300 mg), followed by adding the EG-based solvent 1,4-dioxane (3 mL). The resulting solution was heated at 120° C. for 2 hrs while stirring at 700 rpm. After completion of the reaction, the reaction mixture was cooled to room temperature and diluted 100-fold in distilled water. HPLC analysis was conducted, indicating the production of HMF at a yield of 78%.
example 3
[0099]In a 38 mL thick-glass-walled pressure tubular reactor (having an O.D. of 25.5 mm and a length of 20.3 cm) equipped with a Teflon screw cap, a fructose syrup (150 mmol, 25% water) was placed, together with the solid acid catalyst Amberlyst-15 (300 mg), followed by adding the EG-based solvent diethylene glycol dimethyl ether (3 mL). The resulting solution was heated at 120° C. for 2 hrs while stirring at 700 rpm. After completion of the reaction, the reaction mixture was cooled to room temperature and diluted 100-fold in distilled water. HPLC analysis was conducted, indicating the production of HMF at a yield of 79%.
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